Class 6 Quiz Flashcards
1
Q
Otoacoustic Emission Test (OAE)
A
- measures hair cell function in the inner ear
- specifically the outer hair cells
2
Q
Most common OAE population
A
- infants and other special populations
3
Q
Why would you complete an OAE on an adult?
A
- nonverbal
- intellectual disability/cognitive
- malingering
4
Q
You will produce OAEs if
A
you have normal hearing
5
Q
You will not produce OAEs if
A
hearing loss is greater then 25-30 decibles
6
Q
Why would OAE be a great tool to complete a newborn hearing screening?
A
- they cant raise their hands- respond
- usually sleeping/easier to do then
7
Q
Spontaneous emissions occur in..
A
60-70% of people
8
Q
Emission refers to
A
- sound generated within the normal cochlea of the ear in response to stimulation
9
Q
A little child with congestion will have
A
low frequency emission, more robust during high frequency
10
Q
What is the key to a successful OAE?
A
Probe placement
- not getting any noise outside of the probe
- to limit sound leaking
11
Q
Auditory brainstem response (ABR) Testing
A
- adhesive recording electrodes are placed on the forehead and ears
- captures and analyzes recordings of electric potentials generated by the auditory neural pathways
12
Q
When is ABR done
A
- patient is laying down
- patient remains still and quiet throughout the test- may require sedation
13
Q
How long does ABR take?
A
1-2 hours
14
Q
3 distinct features of ABR
A
- morphology- shape
- latency- how far out it occurs
- amplitude- how “large” the wave is
15
Q
ABR helps diagnose…
A
- neurological abnormalities of the 8th nerve and auditory pathways
- estimation of hearing sensitivity
- soft test for hearing loss, acoustic tumors, cerebellopontine angle tumors
